CVE-2026-2518
Medium
Description
The FastX theme for WordPress is vulnerable to unauthorized limited plugin installation and activation due to missing capability checks on the 'ultp_install_callback' and 'ultp_activate_callback' functions in all versions up to, and including, 1.0.2. This makes it possible for authenticated attackers, with Subscriber-level access and above, to install and activate the PostX plugin.
SeverityMedium
CVSS4.3
Exploit probability—
ProductFastX
PublishedMay 22, 2026
First seenMay 22, 2026
Weakness typeCWE-862Missing authorization
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| wpxpo FastX | v ≤ 1.0.2 | — |
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